If you liked TW Shogun 2, the other Total War games might be an obvious choice. Not all of them are as good as Shogun 2 (which is generally accepted as one of the best, if not the best one in the series). The recent Total War: Warhammer is also said to be a great one.

Other than that, pretty much every Civilization game is recommendable, as long as you get the complete editions with all expansions (which generally massively improve the games). These games are completely turn-based, though, so have no real-time components like the Total War games.

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